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17
oldpepper12
5y

Every language ever:
"You can't compare objects of type A and B"

Swift, on the other hand:
"main.swift:365:34: note: overloads for '==' exist with these partially matching parameter lists: (Any.Type?, Any.Type?), ((), ()), (Bool, B ool), (Character, Character), (Character.UnicodeScalarView.Index, Character.UnicodeScalarView.Index), (CodingUserInfoKey, CodingUserInfoKey ), (OpaquePointer, OpaquePointer), (AnyHashable, AnyHashable), (UInt8, UInt8), (Int8, Int8), (UInt16, UInt16), (Int16, Int16), (UInt32, UIn t32), (Int32, Int32), (UInt64, UInt64), (Int64, Int64), (UInt, UInt), (Int, Int), (AnyKeyPath, AnyKeyPath), (Unicode.Scalar, Unicode.Scalar ), (ObjectIdentifier, ObjectIdentifier), (String, String), (String.Index, String.Index), (UnsafeMutableRawPointer, UnsafeMutableRawPointer) , (UnsafeRawPointer, UnsafeRawPointer), (UnicodeDecodingResult, UnicodeDecodingResult), (_SwiftNSOperatingSystemVersion, _SwiftNSOperatingS ystemVersion), (AnyIndex, AnyIndex), (AffineTransform, AffineTransform), (Calendar, Calendar), (CharacterSet, CharacterSet), (Data, Data), (Date, Date), (DateComponents, DateComponents), (DateInterval, DateInterval), (Decimal, Decimal), (IndexPath, IndexPath), (IndexSet.Index, IndexSet.Index), (IndexSet.RangeView, IndexSet.RangeView), (IndexSet, IndexSet), (Locale, Locale), (Notification, Notification), (NSRange,

NSRange), (String.Encoding, String.Encoding), (PersonNameComponents, PersonNameComponents), (TimeZone, TimeZone), (URL, URL), (URLComponent s, URLComponents), (URLQueryItem, URLQueryItem), (URLRequest, URLRequest), (UUID, UUID), (DarwinBoolean, DarwinBoolean), (DispatchQoS, Disp atchQoS), (DispatchTime, DispatchTime), (DispatchWallTime, DispatchWallTime), (DispatchTimeInterval, DispatchTimeInterval), (Selector, Sele ctor), (NSObject, NSObject), (CGAffineTransform, CGAffineTransform), (CGPoint, CGPoint), (CGSize, CGSize), (CGVector, CGVector), (CGRect, C GRect), ((A, B), (A, B)), ((A, B, C), (A, B, C)), ((A, B, C, D), (A, B, C, D)), ((A, B, C, D, E), (A, B, C, D, E)), ((A, B, C, D, E, F), (A , B, C, D, E, F)), (ContiguousArray<Element>, ContiguousArray<Element>), (ArraySlice<Element>, ArraySlice<Element>), (Array<Element>, Array <Element>), (AutoreleasingUnsafeMutablePointer<Pointee>, AutoreleasingUnsafeMutablePointer<Pointee>), (ClosedRangeIndex<Bound>, ClosedRange Index<Bound>), (LazyDropWhileIndex<Base>, LazyDropWhileIndex<Base>), (EmptyCollection<Element>, EmptyCollection<Element>), (FlattenCollecti onIndex<BaseElements>, FlattenCollectionIndex<BaseElements>), (FlattenBidirectionalCollectionIndex<BaseElements>, FlattenBidirectionalColle ctionIndex<BaseElements>), (Set<Element>, Set<Element>), (Dictionary<Key, Value>.Keys, Dictionary<Key, Value>.Keys), ([Key : Value], [Key : Value]), (Set<Element>.Index, Set<Element>.Index), (Dictionary<Key, Value>.Index, Dictionary<Key, Value>.Index), (ManagedBufferPointer<Hea der, Element>, ManagedBufferPointer<Header, Element>), (Wrapped?, Wrapped?), (Wrapped?, _OptionalNilComparisonType), (_OptionalNilCompariso nType, Wrapped?), (LazyPrefixWhileIndex<Base>, LazyPrefixWhileIndex<Base>), (Range<Bound>, Range<Bound>), (CountableRange<Bound>, Countable Range<Bound>), (ClosedRange<Bound>, ClosedRange<Bound>), (CountableClosedRange<Bound>, CountableClosedRange<Bound>), (ReversedIndex<Base>, ReversedIndex<Base>), (_UIntBuffer<Storage, Element>.Index, _UIntBuffer<Storage, Element>.Index), (UnsafeMutablePointer<Pointee>, UnsafeMut ablePointer<Pointee>), (UnsafePointer<Pointee>, UnsafePointer<Pointee>), (_ValidUTF8Buffer<Storage>.Index, _ValidUTF8Buffer<Storage>.Index) , (Self, Other), (Self, R), (Measurement<LeftHandSideType>, Measurement<RightHandSideType>)"

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  • 8
    5y
    By the way, I don't even want to be programming in Swift, that's the language they teach at my school.
  • 2
    5y
    @oldpepper12 why is that?
  • 9
    5y
    tl;dr
  • 0
    5y
    @oldpepper12 what?? And what about people without a mac?
  • 2
    5y
    @mngr thought you could compile swift on Linux right?
  • 0
    5y
    Swift ist awesome. Compiler errors can be hard to read sometimes but it gets better as swift evolves. And its very good at catching errors at compile time versus runtime.
  • 2
    5y
    > Every language ever:

    > "You can't compare objects of type A and B"

    Sorry to derail your rant, but that is simply not true.

    Example C++: Just write an operator==() for comparing type A and B.
  • 0
    5y
    @rusty-hacker uh, didn't know that, thx
  • 0
    5y
    @freeme I never said there was a good reason
  • 3
    5y
    @Yamakuzure why bother, just find the pointers to both, cast to void* and compare away

    (I will now go do penance for a year for even thinking of such a heinous thing)
  • 1
    5y
    @RememberMe *tehehe* that one's great! ^^
  • 0
    5y
    @Yamakuzure OP is talking about the brevity of error messages.
  • 0
    5y
    @fdgram oh, if you have enough operators but not the fitting one, any C++ compiler will be as talkative as that one. And those lines can become ridiculously long, too. 😕
  • 0
    5y
    @Yamakuzure isn't that only for template errors
  • 1
    5y
    @fdgram No. Although a glitch in your TMP design can surely make hell break loose. I whipped uup a tiny example, here's the output.
  • 1
    5y
    @Yamakuzure And here is the source. Would never write it like that IRL, but that's just a demo anyway.
  • 0
    5y
    Hmmm... On a second look I think that the Swift error output could definitely be improved.

    I mean, it took gcc almost two decades to get to such readable output. Why would anybody want Swift to take as long?

    Crap...
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